Display panel of a programmed computer system with a graphical user interface



FIG. 1 is a front view of a display panel of a programmed computer system with a graphical user interface; and,

FIG. 2 is a front view of a portion thereof, on an enlarged scale, for ease of illustration.

The broken line showing of a display panel is included for the purpose of illustrating environmental structure; the broken lines form no part of the claimed design. 

CLAIM We claim the ornamental design for a display panel of a programmed computer system with a graphical user interface, as shown and described. 